US Bridges

20th Infantry Way over Drainage Canal

Good

Pierce County, Washington · ET339079 · Structure no. DAPFORLEW000014

Built
2003
22 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
10
2016 count
Owner
Federal
Army

About this bridge

20th Infantry Way over Drainage Canal is a steel stringer/multi-beam or girder carrying 20th Infantry Way over Drainage Canal in Pierce County, Washington. It was built in 2003, so it is 22 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, projected to reach 10 by 2046. The structure is 28 ft (8.6 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries20th Infantry Way
CrossesDrainage Canal
LocationET339079
Coordinates47.02968, -122.5535
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length28 ft (8.6 m)
Longest span24 ft (7.4 m)
Deck width36 ft (11 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2016)
Projected traffic10 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 20th Infantry Way over Drainage Canal built?

It was built in 2003, making it 22 years old in 2025.

What condition is 20th Infantry Way over Drainage Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does 20th Infantry Way over Drainage Canal carry?

About 10 vehicles per day (2016 count).

How long is 20th Infantry Way over Drainage Canal?

The structure is 28 ft (8.6 m) long with a longest span of 24 ft (7.4 m) and a deck 36 ft wide.

Who owns 20th Infantry Way over Drainage Canal?

It is owned by the Army.